Patents by Inventor Flemming F. Stengaard

Flemming F. Stengaard has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Permeable, porous polymeric membrane with hydrophilic character, methods for preparing said membranes and their use
    Patent number: 5091086
    Abstract: Permeable, porous polymeric membrane with hydrophilic character of the membrane, said character being obtained by treatment with a solution comprising one or more hydrophilic, mono-or polymeric compounds selected among soluble, OH-containing cellulose derivatives, polyvinylalcohols and low molecular weight, polyfunctional, NH-and/or OH-containing compounds, optionally in the presence of a cross-linking agent, a surfactant and a initiator followed by rendering the layer deposited during the treatment insoluble on the membrane surface by means of a catalyst reaction at elevated temperatures in order to fixate the hydrophilic material to the membrane.
    Type: Grant
    Filed: July 3, 1989
    Date of Patent: February 25, 1992
    Assignee: Danisco A/S
    Inventor: Flemming F. Stengaard
  • Permeable, porous polymeric membrane with hydrophilic character methods for preparing said membranes and their use
    Patent number: 5019261
    Abstract: Permeable, porous polymeric membrane with hydrophilic character of the membrane, said character being obtained by treatment with a solution comprising one or more hydrophilic, mono- or polymeric compounds selected among soluble, OH-containing cellulose derivatives, polyvinylalcohols and low molecular weight, polyfunctional, NH- and/or OH-containing compounds, optionally in the presence of a cross-linking agent, a surfactant and a initiator followed by rendering the layer deposited during the treatment insoluble on the membrane surface by means of a catalyst reaction at elevated temperatures in order to fixate the hydrophilic material to the membrane.
    Type: Grant
    Filed: May 9, 1989
    Date of Patent: May 28, 1991
    Assignee: Dow Danmark A/S
    Inventor: Flemming F. Stengaard